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107 lines
4.1 KiB
107 lines
4.1 KiB
/**
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* share
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* Copyright 2016 by Michael Peter Christen, mc@yacy.net, Frankfurt a. M., Germany
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* First released 24.02.2016 at http://yacy.net
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*
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* This library is free software; you can redistribute it and/or
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* modify it under the terms of the GNU Lesser General Public
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* License as published by the Free Software Foundation; either
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* version 2.1 of the License, or (at your option) any later version.
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*
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* This library is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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* Lesser General Public License for more details.
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*
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* You should have received a copy of the GNU Lesser General Public License
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* along with this program in the file lgpl21.txt
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* If not, see <http://www.gnu.org/licenses/>.
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*/
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import java.io.File;
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import java.io.ByteArrayInputStream;
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import java.io.IOException;
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import java.nio.file.Files;
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import java.nio.file.Path;
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import java.nio.file.StandardCopyOption;
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import net.yacy.yacy;
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import net.yacy.cora.document.encoding.UTF8;
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import net.yacy.cora.order.Base64Order;
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import net.yacy.cora.protocol.RequestHeader;
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import net.yacy.cora.util.ConcurrentLog;
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import net.yacy.search.Switchboard;
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import net.yacy.search.index.Fulltext;
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import net.yacy.server.serverObjects;
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import net.yacy.server.serverSwitch;
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public class share {
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/**
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* Servlet to share any kind of binary to this peer.
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* That mean you can upload 'things'. While this is the generic view,
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* it will operate in the beginning only for full solr export files.
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* The servlet will decide if it wants that kind of data and if the sender is valid,
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* i.e. if the sender is within the own network and known.
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* Index dumps which are uploaded are placed to a specific folder
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* where they can be downloaded again by peers.
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* An optional operation is the immediate indexing of the shared index.
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* @param header
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* @param post
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* @param env
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* @return
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*/
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public static serverObjects respond(final RequestHeader header, final serverObjects post, final serverSwitch env) {
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final serverObjects prop = new serverObjects();
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// display mode: this only helps to display a nice input form for test cases
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int c = post == null ? 1 : post.getInt("c", 0);
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if (c > 0) {
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prop.put("mode", 0);
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return prop;
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}
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// push mode: this does a document upload
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prop.put("mode", 1);
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prop.put("success", 0);
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if (post == null) return prop;
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// check file name
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String filename = post.get("data", "");
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if (!filename.startsWith(Fulltext.yacy_dump_prefix) || !filename.endsWith(".xml.gz")) return prop;
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// check data
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String dataString = post.get("data$file", "");
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if (dataString.length() == 0) return prop;
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byte[] data;
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if (filename.endsWith(".base64")) {
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data = Base64Order.standardCoder.decode(dataString);
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filename = filename.substring(0, filename.length() - 7);
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} else {
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data = UTF8.getBytes(dataString);
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}
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if (data == null || data.length == 0) return prop;
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// modify the file name; ignore and replace the used transaction token
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int ttp = filename.indexOf("_t");
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if (ttp < 0) return prop;
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if (filename.charAt(ttp + 3) != '.') return prop;
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filename = filename.substring(0, ttp) + "_ts" + filename.substring(ttp + 3); // transaction token: 's' as 'shared'.
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// process the data
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File tmpFile = new File(yacy.shareDumpDefaultPath, filename + ".tmp");
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File finalFile = new File(yacy.shareDumpDefaultPath, filename);
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try {
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Files.copy(new ByteArrayInputStream(data), tmpFile.toPath(), StandardCopyOption.REPLACE_EXISTING);
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tmpFile.renameTo(finalFile);
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} catch (IOException e) {
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ConcurrentLog.logException(e);
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return prop;
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}
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prop.put("success", 1);
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return prop;
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}
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}
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